Goal-based/Robot Lawn Mowers/4 robots compared/Reviewed Jun 2026
Robot mowers for detached lawns: zones, transport paths, and second docks
View recordSegwayIVX4
View recordGreenworksIIIAiMowbot C20Z
View recordMammotionIVYUKA 3000
View recordMammotionIVYuka 1500Full specifications20 measurements · 62 of 80 documented
The investigation
5 questions this comparison examines
How many independent zones can each mower save?
Zone count is the first gate for split-property owners. A mower that supports only one mapped area cannot serve a front yard and a back yard as separate, independently scheduled territories.
Segway Navimow X4
Greenworks AiMowbot C20Z
Mammotion YUKA 3000
Mammotion Yuka 1500Segway Navimow X4 manufacturer documentation explicitly lists multi-zone area programming as a feature alongside hybrid virtual and wire-based boundary support.
Mammotion Yuka 1500 autonomy-ladder justification on Robovations references multi-zone operation in defined residential environments; no separate per-zone scheduling specification was documented.
Greenworks AiMowbot C20Z and Mammotion YUKA 3000 manufacturer pages reviewed for this comparison do not publish a specific multi-zone count or per-zone scheduling specification.
Can the mower cross a driveway between two detached areas?
Crossing a driveway is a structural test: the mower must either follow a programmed transport path on a hard surface or require a second dock in the detached area. These are different architectural answers.
Segway Navimow X4Greenworks AiMowbot C20ZMammotion YUKA 3000Mammotion Yuka 1500TechRadar's coverage of the Navimow X4 platform documents the crab-walk pivot mechanism as an engineering solution for precise turns, relevant for transport-path fidelity across hard surfaces.
Segway Navimow X4 manufacturer and press documentation confirms multi-zone area programming with transport path support; the X3 platform review on TechRadar provides corroborating platform context.
Neither Greenworks AiMowbot C20Z, Mammotion YUKA 3000, nor Mammotion Yuka 1500 manufacturer pages or reviewed press documentation describe a driveway-crossing transport path feature.
What is each mower's coverage ceiling per charge?
Front and back yards together may double a typical single-area coverage demand. A mower that exhausts its battery mid-transit or requires a mid-session recharge complicates detached-lawn operation.
Segway Navimow X4Greenworks AiMowbot C20ZMammotion YUKA 3000Mammotion Yuka 1500Segway Navimow X4 product record lists 2600 Wh battery capacity and 180-minute runtime; manufacturer coverage claim is 6+ acres per charge cycle, documented in Robovations product record.
Greenworks AiMowbot C20Z manufacturer page cites 60-minute runtime and 0.4-0.5 acre coverage on standard grass; battery capacity not published.
Mammotion Yuka 1500 manufacturer specification lists 512 Wh and 150-minute runtime; per-charge acre coverage not explicitly documented. YUKA 3000 runtime and battery capacity are not published.
Does the dock architecture require a second unit for detached areas?
Detached yards separated by a driveway present a charging-location problem. If a mower cannot cross to a second dock, or cannot carry enough charge to complete both areas from one dock, a second dock becomes a system requirement.
Segway Navimow X4Greenworks AiMowbot C20ZMammotion YUKA 3000Mammotion Yuka 1500Mammotion YUKA 3000 manufacturer documentation lists a self-emptying sweeper station as part of the base product; this is structurally distinct among the four compared mowers.
Mammotion Yuka 1500 offers an optional sweeper/collector module at approximately $400-500 as documented in its product FAQ; the base unit uses a standard charging dock.
None of the four mowers explicitly documents a second-dock pairing capability for detached areas in reviewed manufacturer or press materials; the X4 transport-path feature is the only documented architectural answer to detached zones.
What is the price and autonomy level for each mower?
The four mowers span two autonomy levels and a $800 price range. Understanding where each sits on the Autonomy Ladder clarifies what the navigation architecture actually delivers, independent of marketing.
Segway Navimow X4Greenworks AiMowbot C20ZMammotion YUKA 3000Mammotion Yuka 1500Segway Navimow X4 is classified at Level IV; Greenworks AiMowbot C20Z at Level III. The C20Z degrades in RTK signal loss to dock-return mode without autonomous continuation, which caps its ladder position.
Mammotion YUKA 3000 ($2,099) and Yuka 1500 ($1,599) are both classified at Level IV. Their autonomous fallback behavior on signal dropout is not fully documented in manufacturer materials.
In closing
What the evidence shows
Patterns that emerged across the questions above.
Transport path is the structural differentiator
Only the Segway Navimow X4 documents a transport-path feature for crossing between detached areas. The other three mowers have no published architecture for driveway crossings; a second dock would be required.
Zone count documentation is sparse across the category
Multi-zone support is explicitly documented only for the X4 and referenced (without per-zone scheduling detail) for the Yuka 1500. Greenworks and YUKA 3000 buyers should verify current app capabilities before assuming multi-zone scheduling.
Autonomy level and coverage capacity diverge from price
Three of four mowers are classified at Level IV, but per-charge coverage ranges from 0.5 acres to 6+ acres. Coverage ceiling, not autonomy classification, is the binding constraint for owners managing two detached lawn areas.
Common questions